Article
Persistence of infectious bronchitis virus (IBV) in farms with chickens immunized with Massachusetts vaccines alone or combined with 793B serotype.
Avian pathology : journal of the W.V.P.A - 1 Aug 2026
Vagnozzi Ariel Eduardo, Gerez Miranda Rocio Del Carmen, Olivera Valeria, Asenzo Gustavo, Cordara Daniela, Di Giacomo Sebastián, Ferrufino Cecilia, Pozzobon Eliza, Timo Fernando
Abstract excerpt
Infectious bronchitis virus (IBV) remains a major challenge for poultry production due to its genetic diversity and rapid evolution under vaccination pressure. This study evaluated how changes in vaccination strategy affect IBV lineage dynamics in commercial broiler farms using a sentinel-bird model. Six farms were monitored over 2 consecutive years. During the first survey (Y1), broilers were vaccinated with a...
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